lib/vedeu/views/streams.rb in vedeu-0.7.4 vs lib/vedeu/views/streams.rb in vedeu-0.8.0

@@ -6,9 +6,51 @@
     #
     # @api private
     #
     class Streams < Vedeu::Repositories::Collection
 
+      # @param (see Vedeu::Repositories::Collection#initialize)
+      # @raise [Vedeu::Error::InvalidSyntax] When the collection
+      #   cannot be coerced since it is unrecognised or unsupported.
+      # @return [Vedeu::Views::Streams]
+      def self.coerce(collection = [], parent = nil, name = nil)
+        if collection.is_a?(Vedeu::Views::Streams)
+          collection
+
+        elsif collection.is_a?(Array)
+          return new(collection, parent, name) if collection.empty?
+
+          coerced_collection = []
+          collection.each do |element|
+            if element.is_a?(Vedeu::Views::Stream)
+              coerced_collection << element
+
+            elsif element.is_a?(String)
+              coerced_collection << Vedeu::Views::Stream.new(value: element)
+
+            end
+          end
+
+          new(coerced_collection, parent, name)
+
+        elsif collection.is_a?(Vedeu::Views::Stream)
+          new([collection], parent, name)
+
+        elsif collection.is_a?(String)
+          return new([], parent, name) if collection.empty?
+
+          new([Vedeu::Views::Stream.new(value: collection)], parent, name)
+
+        else
+          fail Vedeu::Error::InvalidSyntax,
+               'Cannot coerce for Vedeu::View::Streams, as collection ' \
+               'unrecognised.'.freeze
+
+        end
+      end
+
+      alias_method :streams, :value
+
     end # Streams
 
   end # Views
 
 end # Vedeu